Process feedback; make it possible to install monitoring

helpers/kubernetes.py

@@ -110,8 +110,7 @@ def store_kustomization(kustomization_template_filepath, app_slug):
     """Add a kustomization that installs app {app_slug} to the cluster"""
     kustomization_dict = read_template_to_dict(kustomization_template_filepath,
             {"app": app_slug})
-    api_client_instance = api_client.ApiClient()
-    custom_objects_api = client.CustomObjectsApi(api_client_instance)
+    custom_objects_api = client.CustomObjectsApi()
     try:
         api_response = custom_objects_api.create_namespaced_custom_object(
             group="kustomize.toolkit.fluxcd.io",
@@ -128,8 +127,7 @@ def delete_kustomization(kustomization_name):
     """Deletes kustomization for an app_slug. Should also result in the
     deletion of the app's HelmReleases, PVCs, OAuth2Client, etc. Nothing will
     remain"""
-    api_client_instance = api_client.ApiClient()
-    custom_objects_api = client.CustomObjectsApi(api_client_instance)
+    custom_objects_api = client.CustomObjectsApi()
     body = client.V1DeleteOptions()
     try:
         api_response = custom_objects_api.delete_namespaced_custom_object(
@@ -143,6 +141,7 @@ def delete_kustomization(kustomization_name):
         print(f"Could not delete {kustomization_name} Kustomization because of exception {ex}")
         return False
     print(f"Kustomization deleted with api response: {api_response}")
+    return api_response
 
 
 def read_template_to_dict(template_filepath, template_globals):
@@ -292,6 +291,28 @@ def get_helmrelease(name, namespace='stackspin-apps'):
 
     return resource
 
+def list_helmreleases(namespace='stackspin-apps', label_selector=""):
+    """
+    Lists all helmreleases in a certain namespace (stackspin-apps by default)
+
+    Optionally takes a label selector to limit the list.
+    """
+    api_instance = client.CustomObjectsApi()
+
+    try:
+        api_response = api_instance.list_namespaced_custom_object(
+                group="helm.toolkit.fluxcd.io",
+                version="v2beta1",
+                namespace=namespace,
+                plural="helmreleases",
+                label_selector=label_selector)
+    except ApiException as error:
+        if error.status == 404:
+            return None
+        # Raise all non-404 errors
+        raise error
+    return api_response
+
 
 def get_readiness(app_status):
     """